Finding the Fourth Proportional to 63,707.72, 87,955.02 and 42,215.60

Step by Step Solution

1. Step 1: Write the proportion equation
   63,707.72 : 87,955.02 = 42,215.60 : x
2. Step 2: Convert to fraction form
   63,707.72/87,955.02 = 42,215.60/x
3. Step 3: Cross multiply
   63,707.72x = 87,955.02 × 42,215.60
4. Step 4: Simplify right side
   63,707.72x = 3,713,073,942.31
5. Step 5: Solve for x
   x = 3,713,073,942.31/63,707.72
6. Step 6: Final answer
   x = 58,282.95